140 



NEW YCRK STATE MUSEUM 



Bingham above the dam. In this quarry may also be seen the 

 contact between the limestone and the dark Marcellus shale and 

 shaly limestones which form the bed rock beneath the surface 

 soil of the region. 



DETAILED DESCRIPTION OF THE SECTION AT PLUMBOTTOM CREEK 



The general relation of the limestone beds to those of the 

 Marcellus shale is shown in the following table, where the typi- 

 cal Marcellus layers are lettered, and the limestones numbered, 

 from below upward. The limestone beds have been carefully 

 measured and these measurements have been previously 

 recorded by Bishop 1 . 



SECTION EXPOSED AT PLUMBOTTOM CREEK 



Inches 



Shaly limestone .... H 18 



Shaly limestone .... G 5 



Shale F 18 



Limestone . 



YIII 



VII 



VI 



V 



IV 



III 



II 



I 



12 

 14 

 14 



18 

 10 

 14 

 6 

 12 



Lower shale 



E 

 D 

 C 

 B 

 A 



12 



12 



6 



4 



Feet Inches 



8 



14 



11 



i Structural and economic geology of Erie county. N. Y. state geol. 15th an. rep't. 1898. 1 : 305. 



